Pulverizing machine



Surface of the flanges 24;, while the corresponding surfaces 26' of thelower lining plates 2l are of conical contour inclined inwardly from theshaft. .By this arrangement of the parts the openings 18 in the endWalls of the casing are substantially closed by the flanged end disks19, so that-particles of material which work outwardly betweentheflangcs 24 and thefu plates 2O or which collectupon the flanges 24are carried around by the rotation of the flanges 9A and are droppedupon the inclined surfaces Q6 of the plates 21 and deflected by themonto the grating 15 and are discharged with the finished product betweenthe grate bars.

By the arrangement of parts above described the machine is adapted tothe piilverization of abrasive 5material without danger of dust and dirtescaping, to any injurious extent, from the substantially closed casing,and the journal bearings upon which the rotor is supported are sothorouglily protectedV from the finely divided, material which tends toescape through the smallest crevices of the casing that relativelyexpensive and delicate ball bearings may be economically used, therebypermitting the `rotor to revolve at extremely highvelocities and withminimum power consumption.

1. In a machine of the class described, the combination of a casinghaving an opening through a portion of its end wall to permit accesstothe interior of said casing, a sha-ft traversing said c asiiig withits end projecting through the opening, bearings for said shaft spacedfrom said casing to provide a working area, and a disk rotating withsaid shaft and lying closely adjacent the opening with its periphery inclose proximity to the circumferential wall of said opening.

2 In a machine of the class described, the combination of a casinghaving an opening through the uppera portion of its end wall to permitaccess to the interior of said casing,`a shaft traversing said casingwith its end projecting through the opening, bearings for said shaftspaced from said casing to provide a working area, a diskrotatiiig withsaid shaft and lying closely 4adjacent t-he opening with its peripheryin close prox- 'imity to the circumferential Wall of said opening, andan exterior cover for said opening.

3. In a machine of the class described, the combination of a casinghaving an open ing through the upper portion of its eidV wall. anabutment on the casing wall below said opening inclined inwardly towardthe interior of the casing, a shaft traversin said casin'g with its endprojectin throu the opening, bearings for said sha space from saidcasing to provide s. working' area, n.

Lacasse disk rotating with said shaft, and a horizontal flange on saiddisk closely adjacent the opening with its periphery in close prox`imityuto the circumferetialwall of said opening.

All '[ii a machine of the class described, the combination of a casinghaving an opening through the upper portion of its end wall, thecircumferential Wall of which is cylindrical above the horizontal centerof the casing and the vertical wall of which ris inclined inwardlytoward the interior of the casing below said horizontal center, a lrotoriii said casing, bearings yfor said rotor, and a `cylindrical parton'said rotor closely adjacent said opening with its periphery in closeproximity to the circumferential wall of said opening. i

5. I'n amachine of the class described, the combination of a casinghaving an opening in the' upper portion of itsend wall to permit accessto the interior of said casing, a shaft traversingsaid casing with itsend projecting through the opening, bear# ings for said shaft spacedfrom the casing to provide a working area, aV liner plate ,secured tothe inner face of said end wall and having a circumferential openingtherein, and a disk rotating with said shaft and lying within theopening in said liner with its periphery in close proximity to thecircumferential wall of the liner opening.

6. In a machine of the class described, the combination of a casinghaving an opening iii the upper portion of its end wall to permit accesstothe interior of said casing, a shaft traversing said casing with' itsend projecting throughthe opening, bear ings for said shaft spaced`.from the casing to provide a working area, a liner plate vsecured tothe inner face of said .end wall and having a circumferential openingtherein, the peripheral Wall'of which is in.- clined inwardly anddownwardly through in the upper portion of its. end wall topermit accessto the interior of said casing, a shaft traversing said casing with itsend projecting through the opening, bearlll ings for said shaft spacedfrom-the casing I to provide a working area, a vertically divided linerplate of relatively hard material secured tothe inner-face'of said end`wall and having a circumferential o nin therein, and a disk rotat withsai 125 sha and lying within the opening in said liner '-,with itsperiphery in close proximity to hner opeiif l the circumferential wallof the mg. f

' 8. In a machine of the class described, the combination of a casinghaving an opening in the upper portion of its end wall to permit accessto the interior of said casing, a shaft traversing said casing with itsend projecting through the opening, bearings for said shaft spaced fromthe casing to provide va Working area, va vertically divided liner plateof relatively hard ma- 10 terial secured to the inner face of saidv end`Wall and having a circumferential.

-liner With its periphery in c ose proximity to the circumferential wallof the liner opening, and a cover plate for the opening in the end wallof said casing.

In testimony whereof I have hereunto set my hand.

WILLIAM K. LIGGETT.

